I have some ssh users that I want to grant read-ONLY access to files. Actually, I want the owner to have read/write privileges, and the group and anon world to have read ONLY privileges (without the ability to delete). Only the owner should be able to delete. If I set the permission to: 644 ... shouldn't that do it? The rm command still allows group members to remove write protected files. Is there a way to solve this problem?